21384440

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{131}}^1$

素因数の和:213

約数の個数: 128

約数和(自身を含む): 61585920

約数和(自身を除く): 40201480

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 35, 40, 44, 53, 55, 56, 70, 77, 88, 106, 110, 131, 140, 154, 212, 220, 262, 265, 280, 308, 371, 385, 424, 440, 524, 530, 583, 616, 655, 742, 770, 917, 1048, 1060, 1166, 1310, 1441, 1484, 1540, 1834, 1855, 2120, 2332, 2620, 2882, 2915, 2968, 3080, 3668, 3710, 4081, 4585, 4664, 5240, 5764, 5830, 6943, 7205, 7336, 7420, 8162, 9170, 10087, 11528, 11660, 13886, 14410, 14840, 16324, 18340, 20174, 20405, 23320, 27772, 28820, 32648, 34715, 36680, 40348, 40810, 48601, 50435, 55544, 57640, 69430, 76373, 80696, 81620, 97202, 100870, 138860, 152746, 163240, 194404, 201740, 243005, 277720, 305492, 381865, 388808, 403480, 486010, 534611, 610984, 763730, 972020, 1069222, 1527460, 1944040, 2138444, 2673055, 3054920, 4276888, 5346110, 10692220, 21384440]

約数ペア:

[(1, 21384440), (2, 10692220), (4, 5346110), (5, 4276888), (7, 3054920), (8, 2673055), (10, 2138444), (11, 1944040), (14, 1527460), (20, 1069222), (22, 972020), (28, 763730), (35, 610984), (40, 534611), (44, 486010), (53, 403480), (55, 388808), (56, 381865), (70, 305492), (77, 277720), (88, 243005), (106, 201740), (110, 194404), (131, 163240), (140, 152746), (154, 138860), (212, 100870), (220, 97202), (262, 81620), (265, 80696), (280, 76373), (308, 69430), (371, 57640), (385, 55544), (424, 50435), (440, 48601), (524, 40810), (530, 40348), (583, 36680), (616, 34715), (655, 32648), (742, 28820), (770, 27772), (917, 23320), (1048, 20405), (1060, 20174), (1166, 18340), (1310, 16324), (1441, 14840), (1484, 14410), (1540, 13886), (1834, 11660), (1855, 11528), (2120, 10087), (2332, 9170), (2620, 8162), (2882, 7420), (2915, 7336), (2968, 7205), (3080, 6943), (3668, 5830), (3710, 5764), (4081, 5240), (4585, 4664)]